RhinoGold by TDM Solutions

RhinoGold® is the most complete jewellery solution based on Rhinoceros® 5.0 (and 4.0) NURBS modeler for Windows.

Makes it possible for jewelry designers and manufacturers to fully modify and manufacture jewelry precisely but quickly without sacrificing a clear and intuitive interface that both simplifies and cuts down learning time.

I ordered the product when it was first released in Version 1.0. TDM Solutions is constantly striving for product improvement and provides udates to all users. I find the application very user friendly and easy to understand. The application allows a designer to accomplish their project in a small amount of time. Many training videos are available and the large user group is helpful with questions.
Download the trial application and I am sure you will view the plug-in as I have, it is well worth the price.